Pipe-cutting tool.



Patented July 4, I899.

J. W. FLETCHER.

PIPE CUTTING TOOL.

' UNITED STATES PATE T GFFI E.

JO'I IN WM.

FLETCHER, OF TOCOPILLA, CHILE.

PIPE-CUTTING TOOL.

SPECIFICATION forming part of Letters Patent No. 628,403, dated July 4, 1899. Application filed January 16, 1899. Serial No. 702,358. .(No model.)

ting Tool, of'which the followingis a ful [,clear,

and exact description.

My invention relates to an improvement in tools designed for cutting pipe, and'is intended particularly for use in removing pipe from boilers. V

My invention comprises the novel features of construction hereinafter described and claimed.

Reference is to be hadto the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a broken side view of the cuttingtool. Fig. 2 is an end view of the same seen in direction of arrow-0c in Fig. 1. Fig. 3 is a plan View of the device at right angles with the plane of Fig. 1. Fig. at is a longitudinal sectional View on the line 1 4 in Fig. 3, and Fig. 5 is a cross-section taken through the hinge between the two parts, substantially on the line 5 5 in Fig. 4.

Removing pipes or fines from boilers of a locomotive pattern is facilitated by cutting a short piece off of the end of the fiue. This is usually done by some tool inserted in the end of theflue. My device is a tool adapted for this use and one which may be operated by ordinaryhand-tools. The tool as a whole is shaped as a round bar having a flange adapted to rest against the end of the flue. The tool is composed of two parts, the main body A consisting of a bar which is of round or other suitable shape and is provided atits outer end with a squared portion J, adapted to receive a wrench. The portion of this I tool which enters the flue is cut down to a half-cylinder or to approximately this size. At the point where the reduction in size is made it is also shaped so as to form a hinged joint upon which the hinged arm B is pivoted. As herein shown, the hinged arm B is provided with two jaws B, embracing the central portion A of'the body piece. The two are hinged together by a bolt I, passing through the parts.

The two arms of the device are provided with circumferential flanges O and C, which are opposite each other and are adapted to engage the end of the flue, and thus to hold the tool steady and in a fixed position. A setscrew I'I passes through the hinged member B and engages the flat surface of the halfA' of the body-piece. By means of this setscrew the two arms may be separated as desired. That portion of the arm A which is within the flue hasalon'gitudinal slot D, within which is a block E, closely fitting said slot, but capable of sliding therein. A boltF has threaded engagement through a perforation of the block E and is given a hearing at each end in the arm A. At one of these hearings the bolt is provided with aperipheral groove,

which receives a pin G, which holds the bolt in place and prevents longitudinal-movement thereof. By turning the bolt the block E will thus be moved to either end of the siot. It may be adjusted, therefore, at any required distance from the shoulder 0 within the limits of the length of the slot. The block. E has a cutting-point e projecting beyond the tool.

In using this device the block E is adjusted so that the cutting-point e is at a distance from the flange corresponding with the distance from the end of the pipe where it is desired to out the pipe. The set-screw H is backed out until the two arms A and B are in contact. The tool is then inserted within the pipe and the set-screw H turned inward until the point of the cutting-tool is in contact with the pipe. The tool is then turned by engaging the squared end J with a wrench or by any other suitable-means. In the process of cutting the pipe .the set-screw H is gradually adjusted inward, thus forcing the cutting-tool deeper-into the pipe. until the pipe has been out off.

This device is comparatively small and inexpensive and not liable to get out of order. It may also be operated without requiring anything but ordinary hand-tools. By. its use fines may be quickly removed from a boiler.

Having thus fully described my invention,

I claim as new and desire to secure by Letters of-the pipe, and means for longitudinally adjusting the cutter on its arm substantially as described.

2. A pipe-cntter,comprising two hinged arms adapted to lie alongside of each other and to enter the pipe, means for separating the two-parts, and a cutting-tool secured to one part and adj ustable longitudinally thereon, substantially as described.

3. A pipe-cutter, comprising two hinged arms adapt-ed to 1163 alongside of each other, and to enter the pipe, means for separating the two-parts, one of said parts having a longitudinal slot, and a block fitted to slide in said slot and having a projecting cutting end, substantially as described.

4. A pipe-cutter, comprising two hinged arms adapted to lie alongside of each other and to enter the pipe, one of said parts having a longitudinal slot, a block fitted toslide in said slot and having a projecting cutting end and a threaded hole, a bolt having a thrust-bearing in the bar and entering the hole in said block, and means for separating the two arms, substantially as described.

5. A pipe-cutter, comprising a bar having two separable arms adapted to be inserted in a pipe alongside of each other, a set-screw in one arm engaging the other by which they may be separated, a cutter secured in one go arm and adapted to engage the inner surface of the pipe, and means for adjusting said cutter longitudinally of the device, substantially as described.

G. A pipe-cutter, comprising a bar having two separable arms adapted to be inserted in a pipe alongside of each other, and each having a collar adapted to engage the end of the pipe, means for separating said arms, a cutter secured in one arm and adapted to engage the inner surface of the pipe, and means for adjusting-the cutter longitudinally of its arm, substantially as described. 7

7. A pipe-cutter, comprising two hinged arms adapted to lie alongside of each other and to enter the pipe, and each having a collar adapted to engage the end of the pipe, a set-screw passing through one arm and engaging the other by which the two may be separated, a cutting-tool mounted upon one arm and adapted to engage the inner surface. of the pipe, and means for adjusting the position of said cutter longitudinally of the de-' vice, substantially as described.

' JOHN WM. FLETCHER.

Vitnesses: u

J. T. lVIACTERVET, M. N01: CRUZ. 

